On April 10, 1840, according to the administrative reform, it was the part of Caspian Province, and in 1846, joined the Shamakhi Governorate.

Thus, the Ujar District was created on 24 January 1939 as an independent administrative unit from part of Goychay region.

[5] As of 2009[update], Ujar District had an estimated population of 77,900 people, of which 22% were urban dwellers and 78% rural.

[citation needed] According to the report of Statistical Committee of Republic, the total number of population in 2010 was 71.9 thousand people.

The Goychay River starts from the Lahij mountain system - the western slope of Kovdag (1980 m).